Abstract
Soybean (Glycine max L. Merr) has a tremendous value in agriculture as a good source of high-quality plant protein and vegetable oils in one hand and nitrogen fixing ability on the other, now a day largely growing in coastal salt marshes areas of Bangladesh. The aim of this study was to evaluate morphological and physiological responses of soybean varieties (Shohag, BARI Soybean-6, BARI Soybean-5 and Binasoybean-4) to pot grown plants in different concentrations of salinity level i.e., control (0.3), 4, 8 and 12 dS m−1 during 2020-21. Irrespective of the variety, with the increase of salinity levels physiological parameters as well as seed yield were greatly affected. Salinity stress decreased total chlorophyll (Chl a+b) and total dry matter (TDM) was reduced due to salinity stress, which ultimately reduced seed yield irrespective of the variety. Sodium (Na+), calcium (Ca2+), potassium (K+) ion content and the potassium sodium ratios (K+: Na+) in leaf tissue were significantly affected by salinity levels. Under salinity stress, BARI Soybean- 6 showed a higher K+: Na+ ratio in leaf, which indicates higher tolerance to salinity compared to others. However, H2O2 and MDA contents was comparatively lower in the respective variety. This variety also showed higher TDM production, filled pods plant-1 and seed yield plant-1 in all salinity levels compared to other varieties. Results revealed that, soybean var. BARI Soybean-6showedmore tolerance against salinity stress compared to other varieties. Bangladesh Agron. J. 2022, 25(1): 15-22
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Claims 9
Claim · model-written summary
Salinity decreased total chlorophyll.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- Salinity stresse0
- Outcome
- total chlorophylle0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity stress decreased total chlorophyll (Chl a+b) and total dry matter (TDM) was reduced due to salinity stress”
t0“Soybean”
Claim · model-written summary
Salinity reduced total dry matter.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- salinity stresse0
- Outcome
- total dry mattere0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total dry matter (TDM) was reduced due to salinity stress”
t0“Soybean”
Claim · model-written summary
Salinity reduced seed yield.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- seed yielde0
- Direction
- reducede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which ultimately reduced seed yield irrespective of the variety”
t0“Soybean”
Claim · model-written summary
Leaf sodium, calcium and potassium ion contents were significantly affected by salinity.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- leaf tissuee0
- Treatment
- salinity levelse0
- Outcome
- Sodium (Na+), calcium (Ca2+), potassium (K+) ion contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sodium (Na+), calcium (Ca2+), potassium (K+) ion content and the potassium sodium ratios (K+: Na+) in leaf tissue were significantly affected by salinity levels”
t0“Soybean”
Claim · model-written summary
Leaf potassium to sodium ratio was significantly affected by salinity.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- leaf tissuee0
- Treatment
- salinity levelse0
- Outcome
- potassium sodium ratios (K+: Na+)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sodium ratios (K+: Na+) in leaf tissue were significantly affected by salinity levels”
t0“Soybean”
Claim · model-written summary
BARI Soybean-6 had a higher leaf potassium to sodium ratio under salinity than other varieties.
- Taxon
- SoybeanGlycine maxt0
- Material
- BARI Soybean- 6e0
- Organ / stage
- leafe0
- Outcome
- K+: Na+ ratioe0
- Direction
- highere0
- Comparator
- otherse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under salinity stress, BARI Soybean- 6 showed a higher K+: Na+ ratio in leaf, which indicates higher tolerance to salinity compared to others”
t0“Soybean”
Claim · model-written summary
BARI Soybean-6 had comparatively lower H2O2 and MDA contents.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- H2O2 and MDA contentse0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, H2O2 and MDA contents was comparatively lower in the respective variety”
t0“Soybean”
Claim · model-written summary
BARI Soybean-6 had higher total dry matter, filled pods and seed yield than other varieties across salinity levels.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- TDM production, filled pods plant-1 and seed yield plant-1e0
- Direction
- highere0
- Qualifier
- in all salinity levelse0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This variety also showed higher TDM production, filled pods plant-1 and seed yield plant-1 in all salinity levels compared to other varieties”
t0“Soybean”
Claim · model-written summary
BARI Soybean-6 showed more salinity tolerance than other varieties.
- Taxon
- soybeanGlycine maxe0
- Material
- BARI Soybean-6e0
- Outcome
- tolerance against salinity stresse0
- Direction
- moree0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean var. BARI Soybean-6showedmore tolerance against salinity stress compared to other varieties”
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